Sequence of Rendered Images Depicting Light Interactions with Four Different Blocks of Snow

Sequence of rendered images depicting light interactions with four different blocks of snow. From left to right the snow blocks are approximately 5, 10, 15, and 30 cm thick. Each sequence component contains three images. Upper-left image: The geometry is rendered using a standard local illumination model and a point light source situated near the eye-point. Upper- right image: The geometry is rendered using the technique described in Chapter 5. The light source is behind the snow block and the viewing direction is perpendicular to the snow block. Bottom image: The same technique is employed as in the upper-right image. However, the viewing direction is oblique to the snow block.